Core compound



UNITED STATES.

PATENT OFFICE.

WILLIAM HOSKINS, OF CHICAGO, ILPINOIS.

coma comrotmn.

No Drawing.

To all whom it may concern:

Be it known that I, WILLIAM Hosxms, a citizen of the United States, residing at Chicago, in the count of ;Cook and State of '5 Illinois, have invente a new and useful Improvement in Core Compounds, of which the following is a specification.

,My invention relates to certain new and useful improvements in core compounds and' is fully described and explained in the specification. r

It has heretofore been common practice to use as a core'compound the waste from sulfite liquor from spruce treatment, concentrated to about 30 Baum gravity. Linseed oil and other oils such as cotton seed, corn, china Wood, etc., have also been extensively used for this purpose. Each of these classes of materials has certain specific advantages and certain disadvantages. A,

great many efforts have been made to combine these two known materials, sulfite liquor and oil, for the urpose of providing a new composition havmg the advanta es of both, and particularly to avoid the ob ection that a concentrated sulfite. 1i nor is by roscopic when evaporated to dryness and t at cores made with it tend to collect moisture with obviously undesirable results to thecastings.

I have discovered that a highly advantageous core compound can be made at'a low price by adding to these ingredients an emulsifying agent, so that they are held together as a relatively permanent emulsion. My

85 preferred compound consists of e ualparts of raw linseed oil and the waste sul te liquor fro1n spruce eva orated to about Baum gravlty, to whic is added about 5% of am- Specification of Letters Patent.

Patented Sept. 2'7, 1921.

Application filed June 27. 1921. Serial No. 480,862.

monia soap made by sa onifying oleic acid with ammonia. I pre er this emulsifying agent as at present advised because it can be saponified at low temperature, and because under heat it is largely dissipated from the core. These several ingredients are vigorously agitated and a permanent emulsion is formed which is a highly efiective, convenient and desirable core compound.

I claim: 7

1. The herein described core compound comprising raw linseed oil, concentrated waste sulfite 11 nor and an emulslfymg agent in the form o a substantially stable emul- S1011.

2. The herein described core compound comprising a relatively permanent emulsion with substantially equal parts of raw linseed gil and concentratedflwaste sulfite liquorand an emulsifying agent.

3.'The herein escribed core compound com rising a substantially stable emulsion of a out equal parts of raw linseed oil, concentrated waste sulfite liquor and as an emulsifyinlg agent an ammonia soap. 4. he herein described core compound comprising a substantially stable emulsion of about equal parts of raw linseed oil, concentrated waste sulfite liquor and asan emul- WILLIAM HOSKINS. [1 s.] 

